[unix-history] / usr / src / sbin / newfs / newfs.c

/*
 * Copyright (c) 1983, 1989 The Regents of the University of California.
 * All rights reserved.
 *
 * %sccs.include.redist.c%
 */

#ifndef lint
static char sccsid[] = "@(#)newfs.c	6.31 (Berkeley) %G%";
#endif /* not lint */

#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1983, 1989 Regents of the University of California.\n\
 All rights reserved.\n";
#endif /* not lint */

/*
 * newfs: friendly front end to mkfs
 */
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/disklabel.h>
#include <sys/file.h>
#include <sys/mount.h>
#include <ufs/ufs/dir.h>
#include <ufs/ffs/fs.h>

#include <errno.h>
#if __STDC__
#include <stdarg.h>
#else
#include <varargs.h>
#endif
#include <unistd.h>
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <stdlib.h>
#include <paths.h>

#if __STDC__
void	fatal(const char *fmt, ...);
#else
void	fatal();
#endif

#define	COMPAT			/* allow non-labeled disks */

/*
 * The following two constants set the default block and fragment sizes.
 * Both constants must be a power of 2 and meet the following constraints:
 *	MINBSIZE <= DESBLKSIZE <= MAXBSIZE
 *	sectorsize <= DESFRAGSIZE <= DESBLKSIZE
 *	DESBLKSIZE / DESFRAGSIZE <= 8
 */
#define	DFL_FRAGSIZE	1024
#define	DFL_BLKSIZE	8192

/*
 * Cylinder groups may have up to many cylinders. The actual
 * number used depends upon how much information can be stored
 * on a single cylinder. The default is to use 16 cylinders
 * per group.
 */
#define	DESCPG		16	/* desired fs_cpg */

/*
 * MINFREE gives the minimum acceptable percentage of file system
 * blocks which may be free. If the freelist drops below this level
 * only the superuser may continue to allocate blocks. This may
 * be set to 0 if no reserve of free blocks is deemed necessary,
 * however throughput drops by fifty percent if the file system
 * is run at between 90% and 100% full; thus the default value of
 * fs_minfree is 10%. With 10% free space, fragmentation is not a
 * problem, so we choose to optimize for time.
 */
#define MINFREE		10
#define DEFAULTOPT	FS_OPTTIME

/*
 * ROTDELAY gives the minimum number of milliseconds to initiate
 * another disk transfer on the same cylinder. It is used in
 * determining the rotationally optimal layout for disk blocks
 * within a file; the default of fs_rotdelay is 4ms.
 */
#define ROTDELAY	4

/*
 * MAXCONTIG sets the default for the maximum number of blocks
 * that may be allocated sequentially. Since UNIX drivers are
 * not capable of scheduling multi-block transfers, this defaults
 * to 1 (ie no contiguous blocks are allocated).
 */
#define MAXCONTIG	1

/*
 * MAXBLKPG determines the maximum number of data blocks which are
 * placed in a single cylinder group. The default is one indirect
 * block worth of data blocks.
 */
#define MAXBLKPG(bsize)	((bsize) / sizeof(daddr_t))

/*
 * Each file system has a number of inodes statically allocated.
 * We allocate one inode slot per NFPI fragments, expecting this
 * to be far more than we will ever need.
 */
#define	NFPI		4

/*
 * For each cylinder we keep track of the availability of blocks at different
 * rotational positions, so that we can lay out the data to be picked
 * up with minimum rotational latency.  NRPOS is the default number of
 * rotational positions that we distinguish.  With NRPOS of 8 the resolution
 * of our summary information is 2ms for a typical 3600 rpm drive.
 */
#define	NRPOS		8	/* number distinct rotational positions */


int	mfs;			/* run as the memory based filesystem */
int	Nflag;			/* run without writing file system */
int	fssize;			/* file system size */
int	ntracks;		/* # tracks/cylinder */
int	nsectors;		/* # sectors/track */
int	nphyssectors;		/* # sectors/track including spares */
int	secpercyl;		/* sectors per cylinder */
int	trackspares = -1;	/* spare sectors per track */
int	cylspares = -1;		/* spare sectors per cylinder */
int	sectorsize;		/* bytes/sector */
#ifdef tahoe
int	realsectorsize;		/* bytes/sector in hardware */
#endif
int	rpm;			/* revolutions/minute of drive */
int	interleave;		/* hardware sector interleave */
int	trackskew = -1;		/* sector 0 skew, per track */
int	headswitch;		/* head switch time, usec */
int	trackseek;		/* track-to-track seek, usec */
int	fsize = 0;		/* fragment size */
int	bsize = 0;		/* block size */
int	cpg = DESCPG;		/* cylinders/cylinder group */
int	cpgflg;			/* cylinders/cylinder group flag was given */
int	minfree = MINFREE;	/* free space threshold */
int	opt = DEFAULTOPT;	/* optimization preference (space or time) */
int	density;		/* number of bytes per inode */
int	maxcontig = MAXCONTIG;	/* max contiguous blocks to allocate */
int	rotdelay = ROTDELAY;	/* rotational delay between blocks */
int	maxbpg;			/* maximum blocks per file in a cyl group */
int	nrpos = NRPOS;		/* # of distinguished rotational positions */
int	bbsize = BBSIZE;	/* boot block size */
int	sbsize = SBSIZE;	/* superblock size */
int	mntflags;		/* flags to be passed to mount */
u_long	memleft;		/* virtual memory available */
caddr_t	membase;		/* start address of memory based filesystem */
#ifdef COMPAT
char	*disktype;
int	unlabeled;
#endif

char	device[MAXPATHLEN];
char	*progname;

main(argc, argv)
	int argc;
	char *argv[];
{
	extern char *optarg;
	extern int optind;
	register int ch;
	register struct partition *pp;
	register struct disklabel *lp;
	struct disklabel *getdisklabel();
	struct partition oldpartition;
	struct stat st;
	int fsi, fso;
	char *cp, *special, *opstring, buf[BUFSIZ];
	struct statfs *mp;
	char *s1, *s2;
	int len, n;

	if (progname = rindex(*argv, '/'))
		++progname;
	else
		progname = *argv;

	if (strstr(progname, "mfs")) {
		mfs = 1;
		Nflag++;
	}

	opstring = "F:NS:T:a:b:c:d:e:f:i:k:l:m:n:o:p:r:s:t:u:x:";
	if (!mfs)
		opstring += 2;		/* -F is mfs only */

	while ((ch = getopt(argc, argv, opstring)) != EOF)
		switch(ch) {
		case 'F':
			if ((mntflags = atoi(optarg)) == 0)
				fatal("%s: bad mount flags", optarg);
			break;
		case 'N':
			Nflag++;
			break;
		case 'S':
			if ((sectorsize = atoi(optarg)) <= 0)
				fatal("%s: bad sector size", optarg);
			break;
#ifdef COMPAT
		case 'T':
			disktype = optarg;
			break;
#endif
		case 'a':
			if ((maxcontig = atoi(optarg)) <= 0)
				fatal("%s: bad max contiguous blocks\n",
				    optarg);
			break;
		case 'b':
			if ((bsize = atoi(optarg)) < MINBSIZE)
				fatal("%s: bad block size", optarg);
			break;
		case 'c':
			if ((cpg = atoi(optarg)) <= 0)
				fatal("%s: bad cylinders/group", optarg);
			cpgflg++;
			break;
		case 'd':
			if ((rotdelay = atoi(optarg)) < 0)
				fatal("%s: bad rotational delay\n", optarg);
			break;
		case 'e':
			if ((maxbpg = atoi(optarg)) <= 0)
				fatal("%s: bad blocks per file in a cyl group\n",
				    optarg);
			break;
		case 'f':
			if ((fsize = atoi(optarg)) <= 0)
				fatal("%s: bad frag size", optarg);
			break;
		case 'i':
			if ((density = atoi(optarg)) <= 0)
				fatal("%s: bad bytes per inode\n", optarg);
			break;
		case 'k':
			if ((trackskew = atoi(optarg)) < 0)
				fatal("%s: bad track skew", optarg);
			break;
		case 'l':
			if ((interleave = atoi(optarg)) <= 0)
				fatal("%s: bad interleave", optarg);
			break;
		case 'm':
			if ((minfree = atoi(optarg)) < 0 || minfree > 99)
				fatal("%s: bad free space %%\n", optarg);
			break;
		case 'n':
			if ((nrpos = atoi(optarg)) <= 0)
				fatal("%s: bad rotational layout count\n",
				    optarg);
			break;
		case 'o':
			if (strcmp(optarg, "space") == 0)
				opt = FS_OPTSPACE;
			else if (strcmp(optarg, "time") == 0)
				opt = FS_OPTTIME;
			else
				fatal("%s: bad optimization preference %s",
				    optarg, "(options are `space' or `time')");
			break;
		case 'p':
			if ((trackspares = atoi(optarg)) < 0)
				fatal("%s: bad spare sectors per track",
				    optarg);
			break;
		case 'r':
			if ((rpm = atoi(optarg)) <= 0)
				fatal("%s: bad revs/minute\n", optarg);
			break;
		case 's':
			if ((fssize = atoi(optarg)) <= 0)
				fatal("%s: bad file system size", optarg);
			break;
		case 't':
			if ((ntracks = atoi(optarg)) <= 0)
				fatal("%s: bad total tracks", optarg);
			break;
		case 'u':
			if ((nsectors = atoi(optarg)) <= 0)
				fatal("%s: bad sectors/track", optarg);
			break;
		case 'x':
			if ((cylspares = atoi(optarg)) < 0)
				fatal("%s: bad spare sectors per cylinder",
				    optarg);
			break;
		case '?':
		default:
			usage();
		}
	argc -= optind;
	argv += optind;

	if (argc != 2 && (mfs || argc != 1))
		usage();

	special = argv[0];
	cp = rindex(special, '/');
	if (cp == 0) {
		/*
		 * No path prefix; try /dev/r%s then /dev/%s.
		 */
		(void)sprintf(device, "%sr%s", _PATH_DEV, special);
		if (stat(device, &st) == -1)
			(void)sprintf(device, "%s%s", _PATH_DEV, special);
		special = device;
	}
	if (Nflag) {
		fso = -1;
	} else {
		fso = open(special, O_WRONLY);
		if (fso < 0)
			fatal("%s: %s", special, strerror(errno));

		/* Bail if target special is mounted */
		n = getmntinfo(&mp, MNT_NOWAIT);
		if (n == 0)
			fatal("%s: getmntinfo: %s", special, strerror(errno));

		len = sizeof(_PATH_DEV) - 1;
		s1 = special;
		if (strncmp(_PATH_DEV, s1, len) == 0)
			s1 += len;

		while (--n >= 0) {
			s2 = mp->f_mntfromname;
			if (strncmp(_PATH_DEV, s2, len) == 0) {
				s2 += len - 1;
				*s2 = 'r';
			}
			if (strcmp(s1, s2) == 0 || strcmp(s1, &s2[1]) == 0)
				fatal("%s is mounted on %s",
				    special, mp->f_mntonname);
			++mp;
		}
	}
	fsi = open(special, O_RDONLY);
	if (fsi < 0)
		fatal("%s: %s", special, strerror(errno));
	if (fstat(fsi, &st) < 0)
		fatal("%s: %s", special, strerror(errno));
	if ((st.st_mode & S_IFMT) != S_IFCHR && !mfs)
		printf("%s: %s: not a character-special device\n",
		    progname, special);
	cp = index(argv[0], '\0') - 1;
	if (cp == 0 || (*cp < 'a' || *cp > 'h') && !isdigit(*cp))
		fatal("%s: can't figure out file system partition", argv[0]);
#ifdef COMPAT
	if (!mfs && disktype == NULL)
		disktype = argv[1];
#endif
	lp = getdisklabel(special, fsi);
	if (isdigit(*cp))
		pp = &lp->d_partitions[0];
	else
		pp = &lp->d_partitions[*cp - 'a'];
	if (pp->p_size == 0)
		fatal("%s: `%c' partition is unavailable", argv[0], *cp);
	if (fssize == 0)
		fssize = pp->p_size;
	if (fssize > pp->p_size && !mfs)
	       fatal("%s: maximum file system size on the `%c' partition is %d",
			argv[0], *cp, pp->p_size);
	if (rpm == 0) {
		rpm = lp->d_rpm;
		if (rpm <= 0)
			rpm = 3600;
	}
	if (ntracks == 0) {
		ntracks = lp->d_ntracks;
		if (ntracks <= 0)
			fatal("%s: no default #tracks", argv[0]);
	}
	if (nsectors == 0) {
		nsectors = lp->d_nsectors;
		if (nsectors <= 0)
			fatal("%s: no default #sectors/track", argv[0]);
	}
	if (sectorsize == 0) {
		sectorsize = lp->d_secsize;
		if (sectorsize <= 0)
			fatal("%s: no default sector size", argv[0]);
	}
	if (trackskew == -1) {
		trackskew = lp->d_trackskew;
		if (trackskew < 0)
			trackskew = 0;
	}
	if (interleave == 0) {
		interleave = lp->d_interleave;
		if (interleave <= 0)
			interleave = 1;
	}
	if (fsize == 0) {
		fsize = pp->p_fsize;
		if (fsize <= 0)
			fsize = MAX(DFL_FRAGSIZE, lp->d_secsize);
	}
	if (bsize == 0) {
		bsize = pp->p_frag * pp->p_fsize;
		if (bsize <= 0)
			bsize = MIN(DFL_BLKSIZE, 8 * fsize);
	}
	if (density == 0)
		density = NFPI * fsize;
	if (minfree < 10 && opt != FS_OPTSPACE) {
		fprintf(stderr, "Warning: changing optimization to space ");
		fprintf(stderr, "because minfree is less than 10%%\n");
		opt = FS_OPTSPACE;
	}
	if (trackspares == -1) {
		trackspares = lp->d_sparespertrack;
		if (trackspares < 0)
			trackspares = 0;
	}
	nphyssectors = nsectors + trackspares;
	if (cylspares == -1) {
		cylspares = lp->d_sparespercyl;
		if (cylspares < 0)
			cylspares = 0;
	}
	secpercyl = nsectors * ntracks - cylspares;
	if (secpercyl != lp->d_secpercyl)
		fprintf(stderr, "%s (%d) %s (%lu)\n",
			"Warning: calculated sectors per cylinder", secpercyl,
			"disagrees with disk label", lp->d_secpercyl);
	if (maxbpg == 0)
		maxbpg = MAXBLKPG(bsize);
	headswitch = lp->d_headswitch;
	trackseek = lp->d_trkseek;
	/* Reno fix: label may be 0 if faked up by kernel */
#ifdef notdef
#ifdef notdef /* label may be 0 if faked up by kernel */
	bbsize = lp->d_bbsize;
	sbsize = lp->d_sbsize;
#endif
#endif
	oldpartition = *pp;
#ifdef tahoe
	realsectorsize = sectorsize;
	if (sectorsize != DEV_BSIZE) {		/* XXX */
		int secperblk = DEV_BSIZE / sectorsize;

		sectorsize = DEV_BSIZE;
		nsectors /= secperblk;
		nphyssectors /= secperblk;
		secpercyl /= secperblk;
		fssize /= secperblk;
		pp->p_size /= secperblk;
	}
#endif
	mkfs(pp, special, fsi, fso);
#ifdef tahoe
	if (realsectorsize != DEV_BSIZE)
		pp->p_size *= DEV_BSIZE / realsectorsize;
#endif
	if (!Nflag && bcmp(pp, &oldpartition, sizeof(oldpartition)))
		rewritelabel(special, fso, lp);
	if (!Nflag)
		close(fso);
	close(fsi);
#ifdef MFS
	if (mfs) {
		struct mfs_args args;

		sprintf(buf, "mfs:%d", getpid());
		args.name = buf;
		args.base = membase;
		args.size = fssize * sectorsize;
		if (mount(MOUNT_MFS, argv[1], mntflags, &args) < 0)
			fatal("%s: %s", argv[1], strerror(errno));
	}
#endif
	exit(0);
}

#ifdef COMPAT
char lmsg[] = "%s: can't read disk label; disk type must be specified";
#else
char lmsg[] = "%s: can't read disk label";
#endif

struct disklabel *
getdisklabel(s, fd)
	char *s;
	int fd;
{
	static struct disklabel lab;

	if (ioctl(fd, DIOCGDINFO, (char *)&lab) < 0) {
#ifdef COMPAT
		if (disktype) {
			struct disklabel *lp, *getdiskbyname();

			unlabeled++;
			lp = getdiskbyname(disktype);
			if (lp == NULL)
				fatal("%s: unknown disk type", disktype);
			return (lp);
		}
#endif
		(void)fprintf(stderr,
		    "%s: ioctl (GDINFO): %s\n", progname, strerror(errno));
		fatal(lmsg, s);
	}
	return (&lab);
}

rewritelabel(s, fd, lp)
	char *s;
	int fd;
	register struct disklabel *lp;
{
#ifdef COMPAT
	if (unlabeled)
		return;
#endif
	lp->d_checksum = 0;
	lp->d_checksum = dkcksum(lp);
	if (ioctl(fd, DIOCWDINFO, (char *)lp) < 0) {
		(void)fprintf(stderr,
		    "%s: ioctl (WDINFO): %s\n", progname, strerror(errno));
		fatal("%s: can't rewrite disk label", s);
	}
#if vax
	if (lp->d_type == DTYPE_SMD && lp->d_flags & D_BADSECT) {
		register i;
		int cfd;
		daddr_t alt;
		char specname[64];
		char blk[1024];
		char *cp;

		/*
		 * Make name for 'c' partition.
		 */
		strcpy(specname, s);
		cp = specname + strlen(specname) - 1;
		if (!isdigit(*cp))
			*cp = 'c';
		cfd = open(specname, O_WRONLY);
		if (cfd < 0)
			fatal("%s: %s", specname, strerror(errno));
		bzero(blk, sizeof(blk));
		*(struct disklabel *)(blk + LABELOFFSET) = *lp;
		alt = lp->d_ncylinders * lp->d_secpercyl - lp->d_nsectors;
		for (i = 1; i < 11 && i < lp->d_nsectors; i += 2) {
			if (lseek(cfd, (off_t)(alt + i) * lp->d_secsize,
			    L_SET) == -1)
				fatal("lseek to badsector area: %s",
				    strerror(errno));
			if (write(cfd, blk, lp->d_secsize) < lp->d_secsize)
				fprintf(stderr,
				    "%s: alternate label %d write: %s\n",
				    progname, i/2, strerror(errno));
		}
		close(cfd);
	}
#endif
}

/*VARARGS*/
void
#if __STDC__
fatal(const char *fmt, ...)
#else
fatal(fmt, va_alist)
	char *fmt;
	va_dcl
#endif
{
	va_list ap;

#if __STDC__
	va_start(ap, fmt);
#else
	va_start(ap);
#endif
	fprintf(stderr, "%s: ", progname);
	(void)vfprintf(stderr, fmt, ap);
	va_end(ap);
	putc('\n', stderr);
	exit(1);
}

usage()
{
	if (mfs) {
		fprintf(stderr,
		    "usage: %s [ -fsoptions ] special-device mount-point\n",
			progname);
	} else
		fprintf(stderr,
		    "usage: %s [ -fsoptions ] special-device%s\n",
		    progname,
#ifdef COMPAT
		    " [device-type]");
#else
		    "");
#endif
	fprintf(stderr, "where fsoptions are:\n");
	fprintf(stderr,
	    "\t-N do not create file system, just print out parameters\n");
	fprintf(stderr, "\t-S sector size\n");
#ifdef COMPAT
	fprintf(stderr, "\t-T disktype\n");
#endif
	fprintf(stderr, "\t-a maximum contiguous blocks\n");
	fprintf(stderr, "\t-b block size\n");
	fprintf(stderr, "\t-c cylinders/group\n");
	fprintf(stderr, "\t-d rotational delay between contiguous blocks\n");
	fprintf(stderr, "\t-e maximum blocks per file in a cylinder group\n");
	fprintf(stderr, "\t-f frag size\n");
	fprintf(stderr, "\t-i number of bytes per inode\n");
	fprintf(stderr, "\t-k sector 0 skew, per track\n");
	fprintf(stderr, "\t-l hardware sector interleave\n");
	fprintf(stderr, "\t-m minimum free space %%\n");
	fprintf(stderr, "\t-n number of distinguished rotational positions\n");
	fprintf(stderr, "\t-o optimization preference (`space' or `time')\n");
	fprintf(stderr, "\t-p spare sectors per track\n");
	fprintf(stderr, "\t-s file system size (sectors)\n");
	fprintf(stderr, "\t-r revolutions/minute\n");
	fprintf(stderr, "\t-t tracks/cylinder\n");
	fprintf(stderr, "\t-u sectors/track\n");
	fprintf(stderr, "\t-x spare sectors per cylinder\n");
	exit(1);
}
Commit	Line	Data
c018628f	1	/*
ec7b02f7 KM	2	* Copyright (c) 1983, 1989 The Regents of the University of California.
	3	* All rights reserved.
	4	*
70ab3c27	5	* %sccs.include.redist.c%
c018628f DF	6	*/
	7
	8	#ifndef lint
932690ab	9	static char sccsid[] = "@(#)newfs.c 6.31 (Berkeley) %G%";
ec7b02f7	10	#endif /* not lint */
c018628f	11
a54c0b3f	12	#ifndef lint
ec7b02f7 KM	13	char copyright[] =
	14	"@(#) Copyright (c) 1983, 1989 Regents of the University of California.\n\
	15	All rights reserved.\n";
	16	#endif /* not lint */
a54c0b3f SL	17
a54c0b3f SL	18	/*
c6003316	19	* newfs: friendly front end to mkfs
a54c0b3f SL	20	*/
	21	#include <sys/param.h>
	22	#include <sys/stat.h>
8485bb11 KM	23	#include <sys/ioctl.h>
	24	#include <sys/disklabel.h>
	25	#include <sys/file.h>
ec7b02f7	26	#include <sys/mount.h>
558b3a30 KB	27	#include <ufs/ufs/dir.h>
558b3a30 KB	28	#include <ufs/ffs/fs.h>
a54c0b3f	29
fcc01f65	30	#include <errno.h>
e99c53de	31	#if __STDC__
fcc01f65	32	#include <stdarg.h>
e99c53de CT	33	#else
	34	#include <varargs.h>
	35	#endif
932690ab	36	#include <unistd.h>
a54c0b3f	37	#include <stdio.h>
8485bb11	38	#include <ctype.h>
fcc01f65 KB	39	#include <string.h>
fcc01f65 KB	40	#include <stdlib.h>
7abf8d65	41	#include <paths.h>
a54c0b3f	42
e99c53de CT	43	#if __STDC__
	44	void fatal(const char *fmt, ...);
	45	#else
	46	void fatal();
	47	#endif
	48
fcc01f65	49	#define COMPAT /* allow non-labeled disks */
f24e4d82	50
8485bb11 KM	51	/*
	52	* The following two constants set the default block and fragment sizes.
	53	* Both constants must be a power of 2 and meet the following constraints:
	54	* MINBSIZE <= DESBLKSIZE <= MAXBSIZE
	55	* sectorsize <= DESFRAGSIZE <= DESBLKSIZE
	56	* DESBLKSIZE / DESFRAGSIZE <= 8
	57	*/
	58	#define DFL_FRAGSIZE 1024
	59	#define DFL_BLKSIZE 8192
	60
	61	/*
38f1cd11	62	* Cylinder groups may have up to many cylinders. The actual
8485bb11	63	* number used depends upon how much information can be stored
38f1cd11	64	* on a single cylinder. The default is to use 16 cylinders
8485bb11 KM	65	* per group.
	66	*/
	67	#define DESCPG 16 /* desired fs_cpg */
89241117	68
8485bb11 KM	69	/*
	70	* MINFREE gives the minimum acceptable percentage of file system
	71	* blocks which may be free. If the freelist drops below this level
	72	* only the superuser may continue to allocate blocks. This may
	73	* be set to 0 if no reserve of free blocks is deemed necessary,
	74	* however throughput drops by fifty percent if the file system
	75	* is run at between 90% and 100% full; thus the default value of
	76	* fs_minfree is 10%. With 10% free space, fragmentation is not a
	77	* problem, so we choose to optimize for time.
	78	*/
	79	#define MINFREE 10
	80	#define DEFAULTOPT FS_OPTTIME
	81
	82	/*
	83	* ROTDELAY gives the minimum number of milliseconds to initiate
	84	* another disk transfer on the same cylinder. It is used in
	85	* determining the rotationally optimal layout for disk blocks
	86	* within a file; the default of fs_rotdelay is 4ms.
	87	*/
	88	#define ROTDELAY 4
	89
	90	/*
	91	* MAXCONTIG sets the default for the maximum number of blocks
	92	* that may be allocated sequentially. Since UNIX drivers are
	93	* not capable of scheduling multi-block transfers, this defaults
	94	* to 1 (ie no contiguous blocks are allocated).
	95	*/
	96	#define MAXCONTIG 1
	97
3d632f12 KM	98	/*
	99	* MAXBLKPG determines the maximum number of data blocks which are
	100	* placed in a single cylinder group. The default is one indirect
	101	* block worth of data blocks.
	102	*/
	103	#define MAXBLKPG(bsize) ((bsize) / sizeof(daddr_t))
	104
8485bb11 KM	105	/*
8485bb11 KM	106	* Each file system has a number of inodes statically allocated.
ec7b02f7	107	* We allocate one inode slot per NFPI fragments, expecting this
8485bb11 KM	108	* to be far more than we will ever need.
8485bb11 KM	109	*/
ec7b02f7	110	#define NFPI 4
8485bb11	111
38f1cd11 KM	112	/*
	113	* For each cylinder we keep track of the availability of blocks at different
	114	* rotational positions, so that we can lay out the data to be picked
	115	* up with minimum rotational latency. NRPOS is the default number of
	116	* rotational positions that we distinguish. With NRPOS of 8 the resolution
	117	* of our summary information is 2ms for a typical 3600 rpm drive.
	118	*/
	119	#define NRPOS 8 /* number distinct rotational positions */
	120
	121
822f4068	122	int mfs; /* run as the memory based filesystem */
8485bb11	123	int Nflag; /* run without writing file system */
a54c0b3f	124	int fssize; /* file system size */
a54c0b3f SL	125	int ntracks; /* # tracks/cylinder */
a54c0b3f SL	126	int nsectors; /* # sectors/track */
a20edd44	127	int nphyssectors; /* # sectors/track including spares */
8485bb11	128	int secpercyl; /* sectors per cylinder */
a20edd44 KM	129	int trackspares = -1; /* spare sectors per track */
a20edd44 KM	130	int cylspares = -1; /* spare sectors per cylinder */
a54c0b3f	131	int sectorsize; /* bytes/sector */
c5d3fd78 MK	132	#ifdef tahoe
	133	int realsectorsize; /* bytes/sector in hardware */
	134	#endif
c6003316	135	int rpm; /* revolutions/minute of drive */
a20edd44 KM	136	int interleave; /* hardware sector interleave */
	137	int trackskew = -1; /* sector 0 skew, per track */
	138	int headswitch; /* head switch time, usec */
	139	int trackseek; /* track-to-track seek, usec */
187d180d MK	140	int fsize = 0; /* fragment size */
187d180d MK	141	int bsize = 0; /* block size */
8485bb11	142	int cpg = DESCPG; /* cylinders/cylinder group */
f40b03d9	143	int cpgflg; /* cylinders/cylinder group flag was given */
8485bb11 KM	144	int minfree = MINFREE; /* free space threshold */
8485bb11 KM	145	int opt = DEFAULTOPT; /* optimization preference (space or time) */
ec7b02f7	146	int density; /* number of bytes per inode */
8485bb11 KM	147	int maxcontig = MAXCONTIG; /* max contiguous blocks to allocate */
8485bb11 KM	148	int rotdelay = ROTDELAY; /* rotational delay between blocks */
3d632f12	149	int maxbpg; /* maximum blocks per file in a cyl group */
38f1cd11	150	int nrpos = NRPOS; /* # of distinguished rotational positions */
c5d3fd78 MK	151	int bbsize = BBSIZE; /* boot block size */
c5d3fd78 MK	152	int sbsize = SBSIZE; /* superblock size */
822f4068	153	int mntflags; /* flags to be passed to mount */
ec7b02f7 KM	154	u_long memleft; /* virtual memory available */
ec7b02f7 KM	155	caddr_t membase; /* start address of memory based filesystem */
f24e4d82	156	#ifdef COMPAT
894fc092	157	char *disktype;
fcc01f65	158	int unlabeled;
f24e4d82	159	#endif
8485bb11	160
a54c0b3f	161	char device[MAXPATHLEN];
ec7b02f7	162	char *progname;
a54c0b3f	163
a54c0b3f	164	main(argc, argv)
1b8b6e44	165	int argc;
a54c0b3f SL	166	char *argv[];
a54c0b3f SL	167	{
fcc01f65 KB	168	extern char *optarg;
	169	extern int optind;
	170	register int ch;
a54c0b3f	171	register struct partition *pp;
8485bb11 KM	172	register struct disklabel *lp;
	173	struct disklabel *getdisklabel();
	174	struct partition oldpartition;
a54c0b3f	175	struct stat st;
8485bb11	176	int fsi, fso;
fcc01f65	177	char cp, special, *opstring, buf[BUFSIZ];
990775e9 KM	178	struct statfs *mp;
	179	char s1, s2;
	180	int len, n;
a54c0b3f	181
fcc01f65 KB	182	if (progname = rindex(*argv, '/'))
	183	++progname;
	184	else
ec7b02f7	185	progname = *argv;
fcc01f65	186
6bab0c78	187	if (strstr(progname, "mfs")) {
fcc01f65	188	mfs = 1;
ec7b02f7	189	Nflag++;
ec7b02f7	190	}
a54c0b3f	191
fcc01f65 KB	192	opstring = "F:NS:T:a:b:c:d:e:f:i:k:l:m:n:o:p:r:s:t:u:x:";
	193	if (!mfs)
	194	opstring += 2; /* -F is mfs only */
	195
	196	while ((ch = getopt(argc, argv, opstring)) != EOF)
	197	switch(ch) {
	198	case 'F':
	199	if ((mntflags = atoi(optarg)) == 0)
	200	fatal("%s: bad mount flags", optarg);
	201	break;
	202	case 'N':
	203	Nflag++;
	204	break;
	205	case 'S':
	206	if ((sectorsize = atoi(optarg)) <= 0)
	207	fatal("%s: bad sector size", optarg);
	208	break;
894fc092	209	#ifdef COMPAT
fcc01f65 KB	210	case 'T':
	211	disktype = optarg;
	212	break;
894fc092	213	#endif
fcc01f65 KB	214	case 'a':
	215	if ((maxcontig = atoi(optarg)) <= 0)
	216	fatal("%s: bad max contiguous blocks\n",
	217	optarg);
	218	break;
	219	case 'b':
	220	if ((bsize = atoi(optarg)) < MINBSIZE)
	221	fatal("%s: bad block size", optarg);
	222	break;
	223	case 'c':
	224	if ((cpg = atoi(optarg)) <= 0)
	225	fatal("%s: bad cylinders/group", optarg);
	226	cpgflg++;
	227	break;
	228	case 'd':
	229	if ((rotdelay = atoi(optarg)) < 0)
	230	fatal("%s: bad rotational delay\n", optarg);
	231	break;
	232	case 'e':
	233	if ((maxbpg = atoi(optarg)) <= 0)
	234	fatal("%s: bad blocks per file in a cyl group\n",
	235	optarg);
	236	break;
	237	case 'f':
	238	if ((fsize = atoi(optarg)) <= 0)
	239	fatal("%s: bad frag size", optarg);
	240	break;
	241	case 'i':
	242	if ((density = atoi(optarg)) <= 0)
	243	fatal("%s: bad bytes per inode\n", optarg);
	244	break;
	245	case 'k':
	246	if ((trackskew = atoi(optarg)) < 0)
	247	fatal("%s: bad track skew", optarg);
	248	break;
	249	case 'l':
	250	if ((interleave = atoi(optarg)) <= 0)
	251	fatal("%s: bad interleave", optarg);
	252	break;
	253	case 'm':
	254	if ((minfree = atoi(optarg)) < 0 \|\| minfree > 99)
	255	fatal("%s: bad free space %%\n", optarg);
	256	break;
	257	case 'n':
	258	if ((nrpos = atoi(optarg)) <= 0)
	259	fatal("%s: bad rotational layout count\n",
	260	optarg);
	261	break;
	262	case 'o':
	263	if (strcmp(optarg, "space") == 0)
	264	opt = FS_OPTSPACE;
	265	else if (strcmp(optarg, "time") == 0)
	266	opt = FS_OPTTIME;
	267	else
	268	fatal("%s: bad optimization preference %s",
	269	optarg, "(options are `space' or `time')");
	270	break;
	271	case 'p':
	272	if ((trackspares = atoi(optarg)) < 0)
	273	fatal("%s: bad spare sectors per track",
	274	optarg);
	275	break;
	276	case 'r':
	277	if ((rpm = atoi(optarg)) <= 0)
278	fatal("%s: bad revs/minute\n", optarg);
279	break;
280	case 's':
281	if ((fssize = atoi(optarg)) <= 0)
282	fatal("%s: bad file system size", optarg);
283	break;
284	case 't':
285	if ((ntracks = atoi(optarg)) <= 0)
286	fatal("%s: bad total tracks", optarg);
287	break;
288	case 'u':
289	if ((nsectors = atoi(optarg)) <= 0)
290	fatal("%s: bad sectors/track", optarg);
291	break;
292	case 'x':
293	if ((cylspares = atoi(optarg)) < 0)
294	fatal("%s: bad spare sectors per cylinder",
295	optarg);
296	break;
297	case '?':
298	default:
299	usage();
300	}
301	argc -= optind;
302	argv += optind;
303
304	if (argc != 2 && (mfs \|\| argc != 1))
305	usage();
894fc092	306
a54c0b3f	307	special = argv[0];
1b8b6e44	308	cp = rindex(special, '/');
756884f0 MK	309	if (cp == 0) {
	310	/*
	311	* No path prefix; try /dev/r%s then /dev/%s.
	312	*/
	313	(void)sprintf(device, "%sr%s", _PATH_DEV, special);
	314	if (stat(device, &st) == -1)
	315	(void)sprintf(device, "%s%s", _PATH_DEV, special);
	316	special = device;
	317	}
990775e9 KM	318	if (Nflag) {
	319	fso = -1;
	320	} else {
8485bb11	321	fso = open(special, O_WRONLY);
fcc01f65 KB	322	if (fso < 0)
fcc01f65 KB	323	fatal("%s: %s", special, strerror(errno));
990775e9 KM	324
	325	/* Bail if target special is mounted */
	326	n = getmntinfo(&mp, MNT_NOWAIT);
	327	if (n == 0)
	328	fatal("%s: getmntinfo: %s", special, strerror(errno));
	329
	330	len = sizeof(_PATH_DEV) - 1;
	331	s1 = special;
	332	if (strncmp(_PATH_DEV, s1, len) == 0)
	333	s1 += len;
	334
	335	while (--n >= 0) {
	336	s2 = mp->f_mntfromname;
	337	if (strncmp(_PATH_DEV, s2, len) == 0) {
	338	s2 += len - 1;
	339	*s2 = 'r';
	340	}
	341	if (strcmp(s1, s2) == 0 \|\| strcmp(s1, &s2[1]) == 0)
	342	fatal("%s is mounted on %s",
	343	special, mp->f_mntonname);
	344	++mp;
	345	}
	346	}
8485bb11	347	fsi = open(special, O_RDONLY);
fcc01f65 KB	348	if (fsi < 0)
	349	fatal("%s: %s", special, strerror(errno));
	350	if (fstat(fsi, &st) < 0)
	351	fatal("%s: %s", special, strerror(errno));
ea6170ef MK	352	if ((st.st_mode & S_IFMT) != S_IFCHR && !mfs)
	353	printf("%s: %s: not a character-special device\n",
	354	progname, special);
a54c0b3f	355	cp = index(argv[0], '\0') - 1;
8485bb11	356	if (cp == 0 \|\| (cp < 'a' \|\| cp > 'h') && !isdigit(*cp))
a54c0b3f	357	fatal("%s: can't figure out file system partition", argv[0]);
f24e4d82	358	#ifdef COMPAT
894fc092 KM	359	if (!mfs && disktype == NULL)
894fc092 KM	360	disktype = argv[1];
f24e4d82	361	#endif
894fc092	362	lp = getdisklabel(special, fsi);
8485bb11 KM	363	if (isdigit(*cp))
	364	pp = &lp->d_partitions[0];
	365	else
	366	pp = &lp->d_partitions[*cp - 'a'];
	367	if (pp->p_size == 0)
	368	fatal("%s: `%c' partition is unavailable", argv[0], *cp);
	369	if (fssize == 0)
a54c0b3f	370	fssize = pp->p_size;
822f4068	371	if (fssize > pp->p_size && !mfs)
8485bb11 KM	372	fatal("%s: maximum file system size on the `%c' partition is %d",
	373	argv[0], *cp, pp->p_size);
	374	if (rpm == 0) {
	375	rpm = lp->d_rpm;
	376	if (rpm <= 0)
6181c540	377	rpm = 3600;
a54c0b3f SL	378	}
a54c0b3f SL	379	if (ntracks == 0) {
8485bb11 KM	380	ntracks = lp->d_ntracks;
8485bb11 KM	381	if (ntracks <= 0)
6181c540	382	fatal("%s: no default #tracks", argv[0]);
a54c0b3f	383	}
8485bb11 KM	384	if (nsectors == 0) {
	385	nsectors = lp->d_nsectors;
	386	if (nsectors <= 0)
6181c540	387	fatal("%s: no default #sectors/track", argv[0]);
8485bb11	388	}
a54c0b3f	389	if (sectorsize == 0) {
8485bb11 KM	390	sectorsize = lp->d_secsize;
8485bb11 KM	391	if (sectorsize <= 0)
6181c540	392	fatal("%s: no default sector size", argv[0]);
a54c0b3f	393	}
a20edd44 KM	394	if (trackskew == -1) {
	395	trackskew = lp->d_trackskew;
	396	if (trackskew < 0)
6181c540	397	trackskew = 0;
a20edd44 KM	398	}
	399	if (interleave == 0) {
	400	interleave = lp->d_interleave;
	401	if (interleave <= 0)
6181c540	402	interleave = 1;
a20edd44	403	}
a54c0b3f SL	404	if (fsize == 0) {
a54c0b3f SL	405	fsize = pp->p_fsize;
8485bb11 KM	406	if (fsize <= 0)
8485bb11 KM	407	fsize = MAX(DFL_FRAGSIZE, lp->d_secsize);
a54c0b3f	408	}
8485bb11 KM	409	if (bsize == 0) {
	410	bsize = pp->p_frag * pp->p_fsize;
	411	if (bsize <= 0)
	412	bsize = MIN(DFL_BLKSIZE, 8 * fsize);
c6003316	413	}
ec7b02f7 KM	414	if (density == 0)
ec7b02f7 KM	415	density = NFPI * fsize;
75e589fc	416	if (minfree < 10 && opt != FS_OPTSPACE) {
8485bb11 KM	417	fprintf(stderr, "Warning: changing optimization to space ");
8485bb11 KM	418	fprintf(stderr, "because minfree is less than 10%%\n");
75e589fc KM	419	opt = FS_OPTSPACE;
75e589fc KM	420	}
a20edd44 KM	421	if (trackspares == -1) {
	422	trackspares = lp->d_sparespertrack;
	423	if (trackspares < 0)
6181c540	424	trackspares = 0;
a20edd44 KM	425	}
	426	nphyssectors = nsectors + trackspares;
	427	if (cylspares == -1) {
	428	cylspares = lp->d_sparespercyl;
	429	if (cylspares < 0)
6181c540	430	cylspares = 0;
a20edd44 KM	431	}
a20edd44 KM	432	secpercyl = nsectors * ntracks - cylspares;
8485bb11	433	if (secpercyl != lp->d_secpercyl)
fcc01f65	434	fprintf(stderr, "%s (%d) %s (%lu)\n",
8485bb11 KM	435	"Warning: calculated sectors per cylinder", secpercyl,
8485bb11 KM	436	"disagrees with disk label", lp->d_secpercyl);
c9b3f9df KM	437	if (maxbpg == 0)
c9b3f9df KM	438	maxbpg = MAXBLKPG(bsize);
a20edd44 KM	439	headswitch = lp->d_headswitch;
a20edd44 KM	440	trackseek = lp->d_trkseek;
e1b3345a KB	441	/* Reno fix: label may be 0 if faked up by kernel */
e1b3345a KB	442	#ifdef notdef
756884f0	443	#ifdef notdef /* label may be 0 if faked up by kernel */
c5d3fd78 MK	444	bbsize = lp->d_bbsize;
c5d3fd78 MK	445	sbsize = lp->d_sbsize;
e1b3345a	446	#endif
756884f0	447	#endif
8485bb11	448	oldpartition = *pp;
c5d3fd78 MK	449	#ifdef tahoe
c5d3fd78 MK	450	realsectorsize = sectorsize;
187d180d	451	if (sectorsize != DEV_BSIZE) { /* XXX */
c5d3fd78 MK	452	int secperblk = DEV_BSIZE / sectorsize;
	453
	454	sectorsize = DEV_BSIZE;
	455	nsectors /= secperblk;
	456	nphyssectors /= secperblk;
	457	secpercyl /= secperblk;
	458	fssize /= secperblk;
	459	pp->p_size /= secperblk;
	460	}
	461	#endif
8485bb11	462	mkfs(pp, special, fsi, fso);
c5d3fd78 MK	463	#ifdef tahoe
	464	if (realsectorsize != DEV_BSIZE)
	465	pp->p_size *= DEV_BSIZE / realsectorsize;
	466	#endif
8485bb11 KM	467	if (!Nflag && bcmp(pp, &oldpartition, sizeof(oldpartition)))
8485bb11 KM	468	rewritelabel(special, fso, lp);
ec7b02f7 KM	469	if (!Nflag)
	470	close(fso);
	471	close(fsi);
5358b44e	472	#ifdef MFS
822f4068	473	if (mfs) {
5358b44e KB	474	struct mfs_args args;
5358b44e KB	475
822f4068	476	sprintf(buf, "mfs:%d", getpid());
ec7b02f7 KM	477	args.name = buf;
	478	args.base = membase;
	479	args.size = fssize * sectorsize;
fcc01f65 KB	480	if (mount(MOUNT_MFS, argv[1], mntflags, &args) < 0)
fcc01f65 KB	481	fatal("%s: %s", argv[1], strerror(errno));
ec7b02f7	482	}
5358b44e	483	#endif
a54c0b3f SL	484	exit(0);
	485	}
	486
f24e4d82	487	#ifdef COMPAT
894fc092	488	char lmsg[] = "%s: can't read disk label; disk type must be specified";
f24e4d82	489	#else
894fc092 KM	490	char lmsg[] = "%s: can't read disk label";
	491	#endif
	492
8485bb11 KM	493	struct disklabel *
	494	getdisklabel(s, fd)
	495	char *s;
f24e4d82	496	int fd;
a54c0b3f	497	{
8485bb11 KM	498	static struct disklabel lab;
	499
	500	if (ioctl(fd, DIOCGDINFO, (char *)&lab) < 0) {
894fc092 KM	501	#ifdef COMPAT
894fc092 KM	502	if (disktype) {
756884f0	503	struct disklabel lp, getdiskbyname();
894fc092	504
fcc01f65	505	unlabeled++;
756884f0 MK	506	lp = getdiskbyname(disktype);
	507	if (lp == NULL)
	508	fatal("%s: unknown disk type", disktype);
	509	return (lp);
894fc092 KM	510	}
894fc092 KM	511	#endif
fcc01f65 KB	512	(void)fprintf(stderr,
fcc01f65 KB	513	"%s: ioctl (GDINFO): %s\n", progname, strerror(errno));
894fc092	514	fatal(lmsg, s);
8485bb11 KM	515	}
	516	return (&lab);
	517	}
	518
	519	rewritelabel(s, fd, lp)
	520	char *s;
a54c0b3f	521	int fd;
8485bb11 KM	522	register struct disklabel *lp;
8485bb11 KM	523	{
f24e4d82	524	#ifdef COMPAT
fcc01f65	525	if (unlabeled)
f24e4d82 MK	526	return;
f24e4d82 MK	527	#endif
8485bb11 KM	528	lp->d_checksum = 0;
	529	lp->d_checksum = dkcksum(lp);
	530	if (ioctl(fd, DIOCWDINFO, (char *)lp) < 0) {
fcc01f65 KB	531	(void)fprintf(stderr,
fcc01f65 KB	532	"%s: ioctl (WDINFO): %s\n", progname, strerror(errno));
8485bb11	533	fatal("%s: can't rewrite disk label", s);
a54c0b3f	534	}
bf8f0524 MK	535	#if vax
	536	if (lp->d_type == DTYPE_SMD && lp->d_flags & D_BADSECT) {
	537	register i;
c5d3fd78	538	int cfd;
bf8f0524	539	daddr_t alt;
c5d3fd78 MK	540	char specname[64];
c5d3fd78 MK	541	char blk[1024];
866736b4	542	char *cp;
c5d3fd78 MK	543
	544	/*
	545	* Make name for 'c' partition.
	546	*/
	547	strcpy(specname, s);
	548	cp = specname + strlen(specname) - 1;
	549	if (!isdigit(*cp))
	550	*cp = 'c';
	551	cfd = open(specname, O_WRONLY);
fcc01f65 KB	552	if (cfd < 0)
fcc01f65 KB	553	fatal("%s: %s", specname, strerror(errno));
c5d3fd78 MK	554	bzero(blk, sizeof(blk));
c5d3fd78 MK	555	(struct disklabel )(blk + LABELOFFSET) = *lp;
bf8f0524 MK	556	alt = lp->d_ncylinders * lp->d_secpercyl - lp->d_nsectors;
bf8f0524 MK	557	for (i = 1; i < 11 && i < lp->d_nsectors; i += 2) {
756884f0 MK	558	if (lseek(cfd, (off_t)(alt + i) * lp->d_secsize,
756884f0 MK	559	L_SET) == -1)
fcc01f65 KB	560	fatal("lseek to badsector area: %s",
	561	strerror(errno));
	562	if (write(cfd, blk, lp->d_secsize) < lp->d_secsize)
	563	fprintf(stderr,
	564	"%s: alternate label %d write: %s\n",
	565	progname, i/2, strerror(errno));
8485bb11	566	}
ec7b02f7	567	close(cfd);
8485bb11	568	}
bf8f0524	569	#endif
a54c0b3f SL	570	}
	571
	572	/VARARGS/
e99c53de CT	573	void
	574	#if __STDC__
	575	fatal(const char *fmt, ...)
	576	#else
	577	fatal(fmt, va_alist)
a54c0b3f	578	char *fmt;
e99c53de CT	579	va_dcl
e99c53de CT	580	#endif
a54c0b3f	581	{
fcc01f65	582	va_list ap;
a54c0b3f	583
e99c53de	584	#if __STDC__
fcc01f65	585	va_start(ap, fmt);
e99c53de CT	586	#else
	587	va_start(ap);
	588	#endif
	589	fprintf(stderr, "%s: ", progname);
fcc01f65 KB	590	(void)vfprintf(stderr, fmt, ap);
fcc01f65 KB	591	va_end(ap);
a54c0b3f	592	putc('\n', stderr);
fcc01f65 KB	593	exit(1);
	594	}
	595
	596	usage()
	597	{
	598	if (mfs) {
	599	fprintf(stderr,
990775e9 KM	600	"usage: %s [ -fsoptions ] special-device mount-point\n",
990775e9 KM	601	progname);
fcc01f65 KB	602	} else
fcc01f65 KB	603	fprintf(stderr,
990775e9 KM	604	"usage: %s [ -fsoptions ] special-device%s\n",
990775e9 KM	605	progname,
fcc01f65 KB	606	#ifdef COMPAT
	607	" [device-type]");
	608	#else
	609	"");
	610	#endif
	611	fprintf(stderr, "where fsoptions are:\n");
	612	fprintf(stderr,
	613	"\t-N do not create file system, just print out parameters\n");
	614	fprintf(stderr, "\t-S sector size\n");
	615	#ifdef COMPAT
	616	fprintf(stderr, "\t-T disktype\n");
	617	#endif
	618	fprintf(stderr, "\t-a maximum contiguous blocks\n");
	619	fprintf(stderr, "\t-b block size\n");
	620	fprintf(stderr, "\t-c cylinders/group\n");
	621	fprintf(stderr, "\t-d rotational delay between contiguous blocks\n");
	622	fprintf(stderr, "\t-e maximum blocks per file in a cylinder group\n");
	623	fprintf(stderr, "\t-f frag size\n");
	624	fprintf(stderr, "\t-i number of bytes per inode\n");
	625	fprintf(stderr, "\t-k sector 0 skew, per track\n");
	626	fprintf(stderr, "\t-l hardware sector interleave\n");
	627	fprintf(stderr, "\t-m minimum free space %%\n");
	628	fprintf(stderr, "\t-n number of distinguished rotational positions\n");
	629	fprintf(stderr, "\t-o optimization preference (`space' or `time')\n");
	630	fprintf(stderr, "\t-p spare sectors per track\n");
	631	fprintf(stderr, "\t-s file system size (sectors)\n");
	632	fprintf(stderr, "\t-r revolutions/minute\n");
	633	fprintf(stderr, "\t-t tracks/cylinder\n");
	634	fprintf(stderr, "\t-u sectors/track\n");
	635	fprintf(stderr, "\t-x spare sectors per cylinder\n");
	636	exit(1);
a54c0b3f	637	}